I think it's more a question of what film and which lens than type/brand of camera. Those were taken at a very shallow dof judging by the swirly bokeh, the colors, could be PP, but could just as well be from whatever brand of film the photographer used.

These kinds of shots can easily be reproduced in software, and for the first one, becuase of the Pepsi can, it well could have been originally from a digital camera. All it is, is a soft focus and shallow DOF, for the most part.